Vertica - Lookup
Snap type: | Read | |||||||
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Description: | This Snap provides the ability to look up records in the target table and return a selected set of fields for every matched record. The Snap executes one request per multiple input documents to avoid making a request for every input record. JSON paths can be used in the Snap properties and will have values from an incoming document substituted into the properties. However, documents missing values for a given JSON path will be written to the Snap's error view. After a query is executed, the query's results are merged into the incoming document. Queries produced by the Snap have the format: SELECT [Output fields] FROM [Table name] WHERE [C1 = V11 AND C2 = V21 AND...[Cn = Vn1] OR [C1 = V12 AND C2 = V22 AND...[Cn = Vn2] OR ...................................... OR [Cn = V1n AND Cm = V2m AND...[Cn = Vnm]
Expected upstream Snaps: Any Snap that produces documents in the output view such as CSV Parser, JSON Parser, Structure, Data. | |||||||
| Prerequisites: | N/A | |||||||
| Support and limitations: | Works in Ultra Task Pipelines. | |||||||
| Account: | This Snap uses account references created on the Accounts page of SnapLogic Manager to handle access to this endpoint. See Configuring Vertica Accounts for information on setting up this type of account. | |||||||
| Views: |
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Settings | ||||||||
Label | Required. The name for the Snap. You can modify this to be more specific, especially if you have more than one of the same Snap in your pipeline. | |||||||
Schema name | The database schema name. Selecting a schema filters the Table name list to show only those tables within the selected schema. The values can be passed using the pipeline parameters but not the upstream parameter. | |||||||
| Table name | Required. Enter or select the name of SQL table on which to execute the lookup query. The values can be passed using the pipeline parameters but not the upstream parameter. Example: people | |||||||
| Output fields | Required. Enter or select output field names for the SQL SELECT statement. If this property is empty, the Snap selects all fields by executing the statement "SELECT * FROM ...". | |||||||
Lookup conditions | Required. The lookup conditions are created by using the lookup column name and the lookup column value. Each row will build a condition, such as lookupColumn1 = $inputField. Each additional row will be concatenated using a logical AND. All rows together build the lookup condition being used to lookup records in the lookup table. | |||||||
Value | Required. Enter or select the JSON path of the lookup column value. The value will be provided by the input data field. | |||||||
Lookup column name | Required. Enter or select lookup column name. | |||||||
Pass-through on no lookup match | When there is no lookup matching an input document, the input document will pass through to the output view if this property is checked. Otherwise, it will be written to the error view as an error condition. Default value: Not selected | |||||||
| Number of retries | The maximum number of times that the process must be retried before displaying an error. Example: 2 Default value: 0 | |||||||
| Retry interval (seconds) | The maximum resting time in seconds between subsequent retries. Example: 2 Default value: 1 | |||||||
Page lookup error: page "Anaplan Read" not found. If you're experiencing issues please see our Troubleshooting Guide. | Page lookup error: page "Anaplan Read" not found. If you're experiencing issues please see our Troubleshooting Guide. | |||||||
Date type column cannot used in the Lookup conditions. You will have to use the Oracle Execute Snap for this purpose. An example of the execute statement is:
SELECT *
FROM LOOKUPTABLE
WHERE DATECOL >= TO_DATE('2014-11-03', 'yyyy-mm-dd')
Please note ">=" is used instead of "=" in the WHERE clause. If you use "=", you will not get any res
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